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<p class="MsoNormal"><span style="color:#1F497D">So you’ll be doing a mode=itemfeaturenquery or itemfeaturequery. The difference is in the number of features the initial attribute query can match n or 1. The mapfile won’t help much. The only trick here is getting
the line layer setup correctly for attribute queries. Basically, besides being queryable in the first place (e.g. set TEMPLATE), all that means is that you need to set a validation pattern for the qstring parameter so that you can validate what users enter.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">From there the URLs will be of the form:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> /cgi-bin/mapserv?map=your.map&slayer=lines&qitem=item&qstring=string&qlayer=polygons&mode=itemfeaturenquery<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">You can query multiple layers using the slayer, just don’t use qlayer in that case and the query will run against all queryable layers you have ON or have status=DEFAULT.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Steve<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Weisbender, Eric [mailto:Weisbend@WAPA.GOV]
<br>
<b>Sent:</b> Tuesday, June 24, 2014 10:12 AM<br>
<b>To:</b> Lime, Steve D (MNIT); mapserver-users@lists.osgeo.org<br>
<b>Subject:</b> RE: FEATUREQUERY with SLAYER<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks Steve,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I think a look at the mapfile would be helpful. Here is my scenario… I have a file with multiple linear features in it. I would like to type in a line name and return all the polygons that intersect that line.
I think I’m close but I just need to understand better how slayer works.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#1F497D">Thanks,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#1F497D">Eric Weisbender<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#1F497D">GIS Program Lead<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:#1F497D">Western Area Power Administration<br>
(720) 962-7280<br>
<a href="mailto:weisbend@wapa.gov"><span style="color:#1F497D">weisbend@wapa.gov</span></a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Lime, Steve D (MNIT) [<a href="mailto:Steve.Lime@state.mn.us">mailto:Steve.Lime@state.mn.us</a>]
<br>
<b>Sent:</b> 2014, June, 24 8:38 AM<br>
<b>To:</b> Weisbender, Eric; <a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><br>
<b>Subject:</b> RE: FEATUREQUERY with SLAYER<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D">I’ve used it successfully in a number of places, here’s one example:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"> <a href="http://deli.dnr.state.mn.us/data_search.html">
http://deli.dnr.state.mn.us/data_search.html</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">The search by county option uses mode=featurenquery. I can provide more detail if you need it since much of the configuration (and there’s not much to it) is in the mapfile.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Steve<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">
<a href="mailto:mapserver-users-bounces@lists.osgeo.org">mapserver-users-bounces@lists.osgeo.org</a> [<a href="mailto:mapserver-users-bounces@lists.osgeo.org">mailto:mapserver-users-bounces@lists.osgeo.org</a>]
<b>On Behalf Of </b>Weisbender, Eric<br>
<b>Sent:</b> Tuesday, June 24, 2014 8:10 AM<br>
<b>To:</b> <a href="mailto:mapserver-users@lists.osgeo.org">mapserver-users@lists.osgeo.org</a><br>
<b>Subject:</b> [mapserver-users] FEATUREQUERY with SLAYER<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hello List,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I was wondering if there is an example of how to use FEATUREQUERY with SLAYER somewhere that I could reference for a project I am working on where I need to query features that intersect another feature.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal">EW<span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
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